Cannot increase Ubuntu partition with GParted. Maximum size

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Before I started this, I went into Windows 8 and reduced it's size to allow roughly 10GB of unallocated data. I want to increase Ubuntu 12.10's partition to fill that void.
I ran Ubuntu (Trial) from my CD as told to in multiple tutorials and ran GParted. Here's my GParted screen:
http://i.imgur.com/8lyzYWF.png?1
But, when I try to right click and "Move/Resize Partition", it does not allow me to increase the partition size any more. It's "max size" is what it's at currently. How do I make it take over the unallocated space?
sda1 = System Reserved
sda2 = Windows 8
ext4 = Ubuntu 12.10
(HowTos)

I apologize if this is a noob question but I'm new to ubuntu and I do not want to screw anything up. I need to create a new partition to install windows 8.1 but I do not have enough unallocated space to create one. I also can't change the size of /dev/sda2. When I try to resize that partition, it states that the maximum and minimum size is 472449 MiB.

I am trying to increase the size of the partition sda1. But when I try to resize, I don't see any available space though I have 7GB of space. How can I increase the size of sda1 using either 5GB or 2GB unallocated space?